Mercurial > hg > toybox
view lib/help.c @ 1339:a3844a8132bc draft
Isaac Dunham also reported that some diff implementations can't handle nonseekable input, so write to a temporary file instead of <(command).
Use trap EXIT to make sure the temporary files get deleted.
author | Rob Landley <rob@landley.net> |
---|---|
date | Sun, 08 Jun 2014 14:01:37 -0500 |
parents | c5e80c74ec6c |
children | c51a4dbe5db7 |
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// Function to display help text #include "toys.h" #if !CFG_TOYBOX_HELP void show_help(void) {;} #else #include "generated/help.h" #undef NEWTOY #undef OLDTOY #define NEWTOY(name,opt,flags) help_##name "\0" #define OLDTOY(name,oldname,opts,flags) "\xff" #oldname "\0" static char *help_data = #include "generated/newtoys.h" ; void show_help(void) { int i = toys.which-toy_list; char *s; for (;;) { s = help_data; while (i--) s += strlen(s) + 1; // If it's an alias, restart search for real name if (*s != 255) break; i = toy_find(++s)-toy_list; } fprintf(toys.exithelp ? stderr : stdout, "%s", s); } #endif